Bass Drum Tension Rods Reference Guide
6 mm - Fits Pearl (prior to 1995), CB, Mapex, and many generic Taiwan-made drums.
7/32" - Fits most other manufacturers' drums with the exception of Sonor and DW. Fits Pearl bass drums made after 1995. Fits DW bass drums prior to 1996 production.
Bass Drum Tension Rod Lengths - All Gibraltar bass drum T-rods and key rods are 4 3/16" (106mm) long. They fit most manufacturers' bass drums as previously noted, with the exception of drums which have extended space between the hoop and lug receptacle. (We recommend that you measure this space before purchasing)